vc1dec: dont apply the loop filter on fields

Fixes read of uninitialized memory

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

diff --git a/libavcodec/vc1dec.c b/libavcodec/vc1dec.c
index 3debe5230782e0e2bb46d908199443e7314356f1..d448a8a4c81a93e948811c7bbdf98110eddeb05d 100644 (file)
--- a/libavcodec/vc1dec.c
+++ b/libavcodec/vc1dec.c
@@ -4654,7 +4654,7 @@ static void vc1_decode_p_blocks(VC1Context *v)
         if (s->mb_y != s->start_mb_y) ff_draw_horiz_band(s, (s->mb_y - 1) * 16, 16);
         s->first_slice_line = 0;
     }
-    if (apply_loop_filter) {
+    if (apply_loop_filter && v->fcm == PROGRESSIVE) {
         s->mb_x = 0;
         ff_init_block_index(s);
         for (; s->mb_x < s->mb_width; s->mb_x++) {

diff --git a/tests/ref/fate/vc1_sa10143 b/tests/ref/fate/vc1_sa10143
index a008356cf8a5b4deb51898ebf4913c00f20f3582..0d2e69798957e71e58d5f3fa3fc0986303c1ece2 100644 (file)
--- a/tests/ref/fate/vc1_sa10143
+++ b/tests/ref/fate/vc1_sa10143
@@ -1,31 +1,31 @@
 #tb 0: 1/25
 0,          0,          0,        1,   518400, 0x89407f55
-0,          2,          2,        1,   518400, 0xeb8d84a1
-0,          3,          3,        1,   518400, 0x2121ff57
-0,          4,          4,        1,   518400, 0xd81adb3d
-0,          5,          5,        1,   518400, 0x01e36aa2
-0,          6,          6,        1,   518400, 0x6b802361
-0,          7,          7,        1,   518400, 0xc8403c77
-0,          8,          8,        1,   518400, 0xdd342b5d
-0,          9,          9,        1,   518400, 0x2100eea5
-0,         10,         10,        1,   518400, 0x92a22da6
-0,         11,         11,        1,   518400, 0x6bacdef7
-0,         12,         12,        1,   518400, 0x4a00715f
-0,         13,         13,        1,   518400, 0x59b98727
-0,         14,         14,        1,   518400, 0xbf912ee1
-0,         15,         15,        1,   518400, 0x8c966cd6
-0,         16,         16,        1,   518400, 0x2c9a2535
-0,         17,         17,        1,   518400, 0x29085c06
-0,         18,         18,        1,   518400, 0x46ae6b7d
-0,         19,         19,        1,   518400, 0x283100f4
-0,         20,         20,        1,   518400, 0x2731b5ff
-0,         21,         21,        1,   518400, 0x1132ea54
-0,         22,         22,        1,   518400, 0x37cbe539
-0,         23,         23,        1,   518400, 0x08ff75cf
-0,         24,         24,        1,   518400, 0xafb6bc45
-0,         25,         25,        1,   518400, 0x19d3873d
-0,         26,         26,        1,   518400, 0xd494a8be
-0,         27,         27,        1,   518400, 0x285f41ef
-0,         28,         28,        1,   518400, 0xd4b1ffa1
-0,         29,         29,        1,   518400, 0xc3876c3a
-0,         30,         30,        1,   518400, 0xb73dbb62
+0,          2,          2,        1,   518400, 0x1480849d
+0,          3,          3,        1,   518400, 0x0e69ff59
+0,          4,          4,        1,   518400, 0x00d6db06
+0,          5,          5,        1,   518400, 0x1a5b6a69
+0,          6,          6,        1,   518400, 0xc1a1232e
+0,          7,          7,        1,   518400, 0x9a4e3c54
+0,          8,          8,        1,   518400, 0x04122b44
+0,          9,          9,        1,   518400, 0x0fcfeebc
+0,         10,         10,        1,   518400, 0xc7882dc1
+0,         11,         11,        1,   518400, 0x9d79df09
+0,         12,         12,        1,   518400, 0xff6b716f
+0,         13,         13,        1,   518400, 0x638a8746
+0,         14,         14,        1,   518400, 0x07572efb
+0,         15,         15,        1,   518400, 0x306f6cef
+0,         16,         16,        1,   518400, 0xd7602518
+0,         17,         17,        1,   518400, 0x49ab5bf5
+0,         18,         18,        1,   518400, 0x3c736b6c
+0,         19,         19,        1,   518400, 0x95ae00c9
+0,         20,         20,        1,   518400, 0x7b9ab64e
+0,         21,         21,        1,   518400, 0x5205ea68
+0,         22,         22,        1,   518400, 0xb486e618
+0,         23,         23,        1,   518400, 0xa3217616
+0,         24,         24,        1,   518400, 0xc66bbc56
+0,         25,         25,        1,   518400, 0xf024872a
+0,         26,         26,        1,   518400, 0x97d2a8ba
+0,         27,         27,        1,   518400, 0xa3a2418e
+0,         28,         28,        1,   518400, 0x08460005
+0,         29,         29,        1,   518400, 0x50fb6c94
+0,         30,         30,        1,   518400, 0x5584bb40